Merge 3.6-rc6 into staging-next

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / staging / iio / adc / ad7192.c

diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c
index c351cae..aeaa61d 100644 (file)
--- a/drivers/staging/iio/adc/ad7192.c
+++ b/drivers/staging/iio/adc/ad7192.c
@@ -329,6 +329,8 @@ static ssize_t ad7192_write_frequency(struct device *dev,
        ret = strict_strtoul(buf, 10, &lval);
        if (ret)
                return ret;
+       if (lval == 0)
+               return -EINVAL;
 
        mutex_lock(&indio_dev->mlock);
        if (iio_buffer_enabled(indio_dev)) {